Actuating mechanism in oriental-rug looms



July 17, 1928. I 1,677,426

M. A. BAUER AGTUATING MECHANISM IN ORIENTAL RUG LOOMS Filed May 18, 1927 3 Sheets-Sheet 1 M. A. BAUER ACTUATING MECHANISM IN ORIENTAL RUG- LOOMS 3 s-sheet 2 Mr-aZlJ'A Bade Filed May 1927 i W QM July 17', 1928.

M. A. BAUER ACTUA'I'ING MECHANISM IN ORIENTAL RUG LOOMS 3 Sheets$heet 3 Filed May 18, 1927 Patented July 17, 1928.

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MARIUS A. BAUER, or WORCESTER, MASSACHUSETTS, ASSIGNOR To. M. J. HITTALL ASsooIATES, A VOLUNTARY ASSooiATIoNoE MASSACHUSETTS.

AGTUATING MECHANISM 11v ORIENTAL-RUG LooMS.

Application filed. May 18,

This invention relates to improvements in an oriental rug loom of the general type shown in the prior patents to Renard No. 894,287,No. 1,164,117 and No. 1,437,682. The loom shown in these Renard patents is de- Signed to weave rugs or carpets with the tuft yarn looped or knotted into the fabric in exact duplication ofan oriental handweavers knot. These looms necessarily involve many complicated mechanical movements for the accomplishment of this result, and it is the general object of my present invention to simplify the actuating mechanisnr and connections for certain parts of such a .loom.

1 More specifically, it is an object of my invention to simplify the mechanism and con nections by which the yarn grippers or pliers are opened and closed and are moved longitudinally and by which the yarn dividers are given their Several operative movements.

My invention further relates to arrangements and combinations of parts which will be hereinafter set forth and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which Fig. 1 is a front elevation of certain parts of an oriental rug loom;

Fig. 2 is a plan view, partly in .of the parts shown in Fig; 1;

Fig. 3 is a rearelevation of certain ofsaid parts; and r Fig. 4: is a partial side elevation of' a. of yarn grippers or pliers.

section,

pair

Plier mechanism. 7 I will first describe the mechanism for actuating the yarn grippers orpliers. One of these pliers is best shown in Figs. 2 and 4t, and comprises a pair'of slidingmembers 10 and 11 connected to studs 12 and 13 (Fig. 2) in a'rock plate 1 1- having a rear-ward extension 15. The sliding member 10 is provided with-a diamond-shaped opening 16 through which the tuft yarn Y may project and'the member 11 is provided with afor-ked end 17 adapted to grip the yarn against theouter end portion of the member 10. 'For a. more complete description'of the construction and operation ofthe grippers or pliers, reference is made to the Renard Patent No. 1,437,682 abovenoted.

A rod '20 is slidable adjacent the rearward projections and is provided with the end of the Sliding bar 20.

1927-. Serial 110,192,444.

studs 21 adapted to engage said projections For reciprocatingthe bar 20, I provide a face cam 25 (Fig. 33) mounted on a shaft 26'which is connected by bevel gears 27 and 28 with a drive shaft 2 9 intermittently rotated in timed relation with other parts of the loom. The cam 25 is provided with inner and outer concentric portions 30 and 31 connected by inclined cam-portions 32 and 33. A bell crank 85 is mounted on a fixed pivot 36 and is provided with a cam roll positioned in the track of the cam '25-. Thearm 37 of the hell crank is connected by a linkv 38 to a small bell crank 39 pivoted at 40-- and connected by a link 4:1 to a head 42 secured to As the cam 25 is rotated, the bar 20 is given operative movements in opposite directions, with intervening dwells of substantial duration. 'The length of the. stroke may be varied by connecting the link 38 to different holes 43 in the bell" crank arm .37..

By the actuating mechanism and connections above described, the sliding bar 20 is given/reciprocating movements of any .de-

siredextent andt-he mechanism operates more effectively than has been previously the case,

Divider mechanism.

Another important part of my invention relates to the provision of improved mecha nism and connectionsfor actuating the dividers 50 (Fig. 2)=by which the pairs of warp threads are raised and manipulated during the insertion of the pile-yarn andthe formation of a knot. These dividers 50 are mounted intransverse bearings a divider sha-ft51 and are each provided with pinions 52 engaged by a sliding rack .53.. As the rack is moved lengthwise, the dividers. are turned on their axes-and as the shaft 51 is oscillated t-hedr viders are raised and lowered by swinging about the axis of the shaft 51;.

T e ack bar .53 is connected to a head 4:

having a stud extending through an end 56 on a link 57, and also extending through a slotted support 58. The link 57 is adjustably secured by a swivel connection to a pivot stud 59 rotatably mounted in the lower end of a lever 60 (Fig. 1). The lever 60 is mounted on a fixed pivot 61 and has a cam roll at its upper end engaging a cam groove 62in the forward face of the bevel gear 27 previously described.

7 As the gear 27 is rotated, thecam groove causes the lever 60 to oscillate,'thus producing reciprocating movements of the rack 53 at the desired times. An arm 65 (Fig. 2) is clamped to the divider shaft 51 and is provided with a stud 66 for a collar 67 to which a link 68 (Fig. 1) is pivoted at 69.

" The link 68 is vertically reciprocated by cam mechanism (not shown) which causes the shaft 51 to be oscillated, raising and lowering the dividers 50 as desired.- I have thus provided mechanism for oscillating the shaft 51 and reciprocating the rack 53 which is greatly simplified over that previously levers are actuated by links 7 1 connected to suitable cam-mechanism (not shown). The relatively long vertical link 38 (Fig. 3) permits movement of the pivot stud 40 with the carriage 70, without causin substantial angular movement of the bell crank 39.

I have thus provided for all of the essential movements of the pliers and dividers, and have greatly simplified the operative connections therefor.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed otherwise than as set forth in the claims, but what I claim is: 1. In a loom for'weaving oriental rugs, plier-actuating mechanism comprising a longitudinally movable rod for opening and closing a series of yarn pliers, a bell crank, a link directly connecting said bell crank to the adjacentend of said rod,.a second bell crank having a cam roll thereon, a cam effective-t0 intermittently actuate said cam roll and bell crank, and a second link directly connecting said two bell cranks.

2. In a loom for weaving oriental rugs, plier-actuating mechanism comprisinga longitudinally movable rod for opening and closing a series of yarn pliers, a bell crank,

a link directly connecting said bell crank to the adjacent end of said rod, a carriage on which said pliers and bell crank are mounted, a second cam-actuated bell crank mounted on a fixed pivot at a substantial distance above said carr1age, a'relat1vely long Veltb 3. In a loom for weaving oriental rugs,

plier-actuating mechanism comprising a longitudinally movable rod for opening and closing a series of yarn pliers, a bell crank, a link directly connecting said bell crank to the adjacent end of said rod, a second bell crank having a cam roll thereon, a cam effective to intermittently actuate said cam roll and bell crank, and a second link directly connecting said two bell cranks, the second link being selectively connected to one of said bell cranks to vary the travel of said rod.

4. In a loom for weaving oriental rugs, a plurality of yarn dividers, a supporting shaft in which said dividers are mounted for angular movement about transverse parallel axes, a pinion on each yarn divider, a

rack mounted in said shaft and operatively engaging all of said pinions, a cam actuated lever, and a link directly connecting said lever to said rack.

5. In a loom for weaving oriental rugs, a plurality of yarn dividers, a supporting shaft in which said dividers are mounted for angular movement about transverse parallel axes, a pinion on each yarn divider, a rack mounted in said shaft and operatively engaging all of said pinions, a cam-actuated lever, and a link directly connecting said lever to said rack, said link beingadjustable relative to said lever to vary the longitudinal position of said rack.

6. In a loom for weaving oriental rugs, a plurality of yarn dividers, a supporting shaft in which said dividers are mounted for angular movement about transverse parallel axes, a pinion on each yarn divider, a rack mounted insaid shaft and operatively engaging all of said pinions, means to inter mittently reciprocate said rack, an arm and stud on said shaft, and a vertically movable cam-actuated link directly connected to said stud and effective to oscillate said shaft.

7. In a loom for weaving oriental rugs, a

rack-reciprocating means including a swivel connection permitting oscillation of said rack with said shaft.

8. In a loom for Weaving oriental rugs, a plurality of yarn dividers a supporting shaft in which said dividers are mounted for angular movement about transverse parallel axes, a pinion on each yarn divider, a rack mounted in said shaft and operatively engaging all of said pinions; a stud on said rack a link connected thereto for reciprocating said rack, a slotted guideway for said stud fixed on the end of said shaft, and means to oscillate said shaft and guideway. In testimony whereof I have hereunto aiiixed my signature.

' MARIUS A. BAUER. 

